2021111133 has 8 divisors (see below), whose sum is σ = 2695029696. Its totient is φ = 1347300000.

The previous prime is 2021111047. The next prime is 2021111159. The reversal of 2021111133 is 3311111202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021111133 - 2¹⁶ = 2021045597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021116133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43008 + ... + 76758.

It is an arithmetic number, because the mean of its divisors is an integer number (336878712).

Almost surely, 2^2021111133 is an apocalyptic number.

It is an amenable number.

2021111133 is a deficient number, since it is larger than the sum of its proper divisors (673918563).

2021111133 is a wasteful number, since it uses less digits than its factorization.

2021111133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53715.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2021111133 is about 44956.7696014738. The cubic root of 2021111133 is about 1264.3386030469.

Adding to 2021111133 its reverse (3311111202), we get a palindrome (5332222335).

The spelling of 2021111133 in words is "two billion, twenty-one million, one hundred eleven thousand, one hundred thirty-three".